Tag Archive for ‘por defecto’ at Jompeich d’er Bisente

Tag Archive for 'por defecto'

Published

on Marzo 6, 2008

. 0 Comments

It’s possible to assign a default value to a variable in case it isn’t already defined. The syntax is:

FOO=${FOO:=bar}

Example:

$ FOO=${FOO:=bar}
$ echo $FOO
bar

$ BAR=test
$ BAR=${BAR:=foo}
$ echo $BAR
test